China to launch first cargo spacecraft Tianzhou-1 soon

China is all set to launch its first cargo spacecraft Tianzhou-1 into space between April 20 and 24 to dock with the orbiting experimental space station. It is expected to dock with the orbiting Tiangong-2 space lab and conduct in-orbit refuelling. The cargo spacecraft will also carry out space experiments, including one on non-Newtonian gravitation.